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z�Interface to the libbzip2 compression library.
This module provides a file interface, classes for incremental
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BZ2Compressor�BZ2Decompressorc �� ` � \ sQ s]s n QsQQ] -Q kksQ s\Q 2 s\Q 2 s \Q 2 s
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ksQQ ksQ sQQ ksQQ ksQ sQ s\O0 1Q ksQ sQsU s P! )r a, A file object providing transparent bzip2 (de)compression.
A BZ2File can act as a wrapper for an existing file object, or refer
directly to a named file on disk.
Note that BZ2File provides a *binary* file interface - data read is
returned as bytes, and data to be written should be given as bytes.
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5 o[( O* U2 U m P! ] U m P! )a� Open a bzip2-compressed file.
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name of the file to be opened. Otherwise, it should be a file
object, which will be used to read or write the compressed data.
mode can be 'r' for reading (default), 'w' for (over)writing,
'x' for creating exclusively, or 'a' for appending. These can
equivalently be given as 'rb', 'wb', 'xb', and 'ab'.
If mode is 'w', 'x' or 'a', compresslevel can be a number between 1
and 9 specifying the level of compression: 1 produces the least
compression, and 9 (default) produces the most compression.
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multiple compressed streams.
z%compresslevel must be between 1 and 9�rb�wb�xb�ab�Invalid mode: �read�writez6filename must be a str, bytes, file or PathLike object)�trailing_error)� �rr )�wr
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PS m h 9 h9 h)z�Flush and close the file.
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closed, any other operation on it will raise a ValueError.
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$��z�z�Z�'�� � �"�"�$����{�*������t� /� /� 5� 5� 7�8�#'�� �
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� #�� �sF �C4 �/C4 � :C4 �C �)C �C1�4E�6D8�D8�"E�8E�Ec � � U O PI ! )z True if this file is closed.)r r8 s &r0 r5 �BZ2File.closedx s � � �x�x�4� � r3 c �P � U O 2 U O O ! )N)�_check_not_closedr �namer8 s &r0 r> � BZ2File.name} s � � � � � ��x�x�}�}� r3 c �6 � U O [ 6X c Q ! Q! )r
r )r r r8 s &r0 r- � BZ2File.mode� s � ��z�z�[�0�t�:�d�:r3 c �X � U O 2 U O O 2 ! )z3Return the file descriptor for the underlying file.)r= r �filenor8 s &r0 rC �BZ2File.fileno� s � � � � � ��x�x��� � r3 c �h � U O 2 9% c U O O 2 ! )z)Return whether the file supports seeking.)�readabler) �seekabler8 s &r0 rG �BZ2File.seekable� s# � ��}�}��:�:�4�<�<�#8�#8�#:�:r3 c �J � U O 2 U O [ 6H ! )z/Return whether the file was opened for reading.)r= r r r8 s &r0 rF �BZ2File.readable� s � � � � � ��z�z�Z�'�'r3 c �J � U O 2 U O [ 6H ! )z/Return whether the file was opened for writing.)r= r r r8 s &r0 �writable�BZ2File.writable� s � � � � � ��z�z�[�(�(r3 c �Z � U O 2 U O O U2 ! )z�Return buffered data without advancing the file position.
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)�_check_can_readr) �peek)r+ �ns &&r0 rP � BZ2File.peek� s' � �
� � � � �|�|� � ��#�#r3 c �Z � U O 2 U O O U2 ! )z�Read up to size uncompressed bytes from the file.
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Returns b'' if the file is already at EOF.
)rO r) r �r+ �sizes &&r0 r � BZ2File.read� s% � �
� � � ��|�|� � ��&�&r3 c � � U O 2 U] 6 c [ O oU O O U2 ! )z�Read up to size uncompressed bytes, while trying to avoid
making multiple reads from the underlying stream. Reads up to a
buffer's worth of data if size is negative.
Returns b'' if the file is at EOF.
)rO r' �DEFAULT_BUFFER_SIZEr) �read1rT s &&r0 rY �
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� � � � �!�8��)�)�D��|�|�!�!�$�'�'r3 c �Z � U O 2 U O O U2 ! )zBRead bytes into b.
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)rO r) �readinto)r+ �bs &&r0 r\ �BZ2File.readinto� s% � �
� � � ��|�|�$�$�Q�'�'r3 c �� � [ U[ 2 % f. [ UQ2 % f [ Q2 gUO 2 oU O 2 U O O U2 ! )z�Read a line of uncompressed bytes from the file.
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non-negative, no more than size bytes will be read (in which
case the line may be incomplete). Returns b'' if already at EOF.
� __index__�Integer argument expected)r �intr# r$ r` rO r) �readlinerT s &&r0 rc �BZ2File.readline� sW � � �$��$�$��4��-�-� � ;�<�<��>�>�#�D� � � � ��|�|�$�$�T�*�*r3 c �� � [ U[ 2 % f. [ UQ2 % f [ Q2 gUO 2 oU O 2 U O O U2 ! )z�Read a list of lines of uncompressed bytes from the file.
size can be specified to control the number of lines read: no
further lines will be read once the total size of the lines read
so far equals or exceeds size.
r` ra )r rb r# r$ r` rO r) � readlinesrT s &&r0 rf �BZ2File.readlines� sW � � �$��$�$��4��-�-� � ;�<�<��>�>�#�D� � � � ��|�|�%�%�d�+�+r3 c �D � U O 2 [ U[ [ 12 % c
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Returns the number of uncompressed bytes written, which is
always the length of data in bytes. Note that due to buffering,
the file on disk may not reflect the data written until close()
is called.
) �_check_can_writer r � bytearray�len�
memoryview�nbytesr �compressr r r* )r+ �data�length�
compresseds && r0 r �
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� � � � �d�U�I� .� /� /���Y�F� �d�#�D��[�[�F��%�%�.�.�t�4�
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r3 c �B � [ O O V2 ! )z�Write a sequence of byte strings to the file.
Returns the number of uncompressed bytes written.
seq can be any iterable yielding byte strings.
Line separators are not added between the written byte strings.
)r �
BaseStream�
writelines)r+ �seqs &&r0 ru �BZ2File.writelines� s � � �"�"�-�-�d�8�8r3 c �Z � U O 2 U O O V2 ! )a� Change the file position.
The new position is specified by offset, relative to the
position indicated by whence. Values for whence are:
0: start of stream (default); offset must not be negative
1: current stream position
2: end of stream; offset must not be positive
Returns the new file position.
Note that seeking is emulated, so depending on the parameters,
this operation may be extremely slow.
)�_check_can_seekr) �seek)r+ �offset�whences &&&r0 rz � BZ2File.seek� s% � �
� � � ��|�|� � ��0�0r3 c � � U O 2 U O [ 6X c U O O 2 ! U O
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__module__� __qualname__�__firstlineno__�__doc__r1 r6 �propertyr5 r> r- rC rG rF rL rP r rY r\ rc rf r ru r' �SEEK_SETrz r �__static_attributes__�__classdictcell__)�
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(�(� +� ,� �*9� #%�+�+� 1�$� r3 c �D � QU7 c QU7 c [ QU8 02 gL-Ud [ Q2 gUd [ Q2 gUd [ Q2 gUO QP2 o[ VUQ5 oQU7 c. [ O U2 o[ O
VsVE2 ! U! )a� Open a bzip2-compressed file in binary or text mode.
The filename argument can be an actual filename (a str, bytes, or
PathLike object), or an existing file object to read from or write
to.
The mode argument can be "r", "rb", "w", "wb", "x", "xb", "a" or
"ab" for binary mode, or "rt", "wt", "xt" or "at" for text mode.
The default mode is "rb", and the default compresslevel is 9.
For binary mode, this function is equivalent to the BZ2File
constructor: BZ2File(filename, mode, compresslevel). In this case,
the encoding, errors and newline arguments must not be provided.
For text mode, a BZ2File object is created, and wrapped in an
io.TextIOWrapper instance with the specified encoding, error
handling behavior, and line ending(s).
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z0Argument 'encoding' not supported in binary modez.Argument 'errors' not supported in binary modez/Argument 'newline' not supported in binary mode)r )r �replacer r' �
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�d�{��#�#�H�-��� � � �v�G�G��r3 c �f � [ U2 oUO U 2 UO 2 * ! )z�Compress a block of data.
compresslevel, if given, must be a number between 1 and 9.
For incremental compression, use a BZ2Compressor object instead.
)r rn r7 )ro r �comps && r0 rn rn A s( � � � � '�D� �=�=�� ���� � -�-r3 c � � , oU % cY [ 2 o UO U 2 oUO U2 UO % f [ Q2 gUO o J` QO U2 ! [ c S% c J' g h 9 h)zbDecompress a block of data.
For incremental decompression, use a BZ2Decompressor object instead.
zACompressed data ended before the end-of-stream marker was reachedr3 )r �
decompressr& �append�eofr � unused_data�join)ro �results�decomp�ress & r0 r� r� L s� � �
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